(Điền vào chỗ trống dạng đúng của các từ đã cho. Không sử dụng dạng viết tắt.)
1. If I (finish) ……..……..a bottle of water, I (put) …………..…….it into the recycling bin.
2. The climate (be) …………..….. warmer if the amount of carbon dioxide in the atmosphere (increase) …………………..
3. If Anh (see) ………………..a used water bottle on the pavement, she (pick) ……………… it up and put + public, I (remind) ………..…. him not to do that again.
5. People's health (be) ………………..better if the air (be) ………………..cleaner.
6. If she (continue) ………………..to make noise, other people (be) …………….. very annoyed.
7 .Floods (decrease) ……………….. if trees (be) ……………… planted more.
8 .If we (talk) …………..……. to him about the effects of environmental pollution, he (not put) ……………….…. rubbish into the river.